Expansion of (1 + 2*x)/(1 - 6*x + 6*x^2).

Terms

a(0) =1a(1) =8a(2) =42a(3) =204a(4) =972a(5) =4608a(6) =21816a(7) =103248a(8) =488592a(9) =2312064a(10) =10940832a(11) =51772608a(12) =244990656a(13) =1159308288a(14) =5485905792a(15) =25959585024a(16) =122842075392a(17) =581294942208